The National Park Service (NPS) is an agency of the federal government of the United States that manages all national parks, many national monuments, and other conservation and historical properties with various title designations. The United States Congress created the agency on August 25, 1916 through the National Park Service Organic Act.
The NPS is an operating unit of the United States Department of the Interior. The agency is charged with a dual role of preserving the ecological and historical integrity of the places entrusted to its management while also making them available and accessible for public use and enjoyment.
In 2018, the NPS employed approximately 12,363 employees who oversaw 419 units, of which 62 were designated national parks.